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To say that Zeroflame Fire Retardant Treatment is revolutionary is an understatement. Never before has there been such a simple product to use for the protection of timber against fire!. Where to use:. For solid timber. Externally – log cabins, timber cladding, fencing, garages, sheds, saunas, etc.. Internally – timber ceilings, wall panelling, tongue & groove, staircases, floors, etc. Commercial and domestic environments. Protection achieved:. Will protect timber substrates to Euro-class B-s1, d0 (Equivalent to Class 0 & 1). Tested to European Standard EN 13823 and BS EN 11925-2. Product features:. Unaffected by moisture and humidity when dry. Non-leaching. Unaffected by wear. Waterborne. Virtually odourless, non-toxic, non-allergic. Colourless. Please test on a small area before treating the complete surface to ensure you are satisfied with the result. Leaves timber looking natural. Biologically and ecologically safe. Non-specialist application. Application by brush, roller, spray, vacuum or dipping. Suitable for off-site application. Can be overcoated with waterborne varnishes and wood stains if a decorative or protective finish is required. Please test on a small area before treating the complete surface to ensure you are satisfied with the result. Apply for and download the certificate online. Coverage rate – 3.7m²/litre (2.7m²/L-litre on cedar). Sizes available - 5L, 20L. Key Points. For most species of timber, the total coverage rate to work to is 3.7m²/L. For cedar, only the total coverage rate is 2.7m²/L to achieve Euro Class B and Class 0 spread of flame and fire propagation.. For cladding, we recommend coating all sides of the panels.. We recommend the cladding being a minimum of 14mm.. With Zeroflame Treatment the timber should be unsealed to enable the Treatment to be absorbed.